22 Flutter: Checkbox

import 'package:flutter/material.dart';
void main(){
runApp(new MaterialApp(
home: new MyApp(),
class MyApp extends StatefulWidget {
_State createState() => new _State();
//State is information of the application that can change over time or when some actions are taken.
class _State extends State<MyApp>{
bool _value1 = false;
bool _value2 = false;
//we omitted the brackets '{}' and are using fat arrow '=>' instead, this is dart syntax
void _value1Changed(bool value) => setState(() => _value1 = value);
void _value2Changed(bool value) => setState(() => _value2 = value);
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Name here'),
//hit Ctrl+space in intellij to know what are the options you can use in flutter widgets
body: new Container(
padding: new EdgeInsets.all(32.0),
child: new Center(
child: new Column(
children: <Widget>[
new Checkbox(value: _value1, onChanged: _value1Changed),
new CheckboxListTile(
value: _value2,
onChanged: _value2Changed,
title: new Text('Hello World'),
controlAffinity: ListTileControlAffinity.leading,
subtitle: new Text('Subtitle'),
secondary: new Icon(Icons.archive),
activeColor: Colors.red,